Consumes pre-classified visual-diff JSON and a reviewer-signed acceptance log to produce a single go/no-go CI verdict for visual regression. Blocks when intentional baseline changes lack a non-author reviewer sign-off or when regressions are present, and emits the binding gate artifacts - visual-gate.json + visual-gate.md - with fail-closed handling of a missing classifier run and author-cannot-self-approve enforcement, so the pipeline can exit non-zero on BLOCK. Use when the gate's input is pre-classified diff data and the enforcement concern is reviewer approval and a binding CI verdict.